The Unholy Night

Ernest Torrence

Dr. Ballou

Roland Young

Lord Montague

Dorothy Sebastian

Lady Efra

Natalie Moorhead

Lady Vi

Sydney Jarvis

The Butler

Polly Moran

Polly, Maid

George Cooper

Frey, Lord Montague's Orderly

Sôjin Kamiyama

The Mystic

Claude Fleming

Sir James Rumsey

Clarence Geldart

Inspector Lewis

John Miljan

Major Mallory

Richard Tucker

Colonel Davidson

John Loder

Captain Dorchester

Philip Strange

Lieutenant Williams

John Roche

Lieutenant Savor

Lionel Belmore

Major Endicott

Gerald Barry

Captain Bradley

Richard Travers

Major McDougal

Ellinor Vanderveer

Guest at First Seance

Boris Karloff

Abdul Mohammed Bey - the Hindu Lawyer (uncredited)